Damaging Winds in Arkansas, August 26, 2005

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
940 PM CDT FRI AUG 26 2005

.UPDATE...
CURRENT FORECAST ON TRACK. A FEW SHOWERS AND THUNDERSTORMS
DEVELOPING OVER WEST CENTRAL AND NORTHWESTERN PARTS OF THE FORECAST
AREA AT MID EVENING. MORE ACTIVITY WILL MOVE INTO NORTHWESTERN
ARKANSAS OVERNIGHT AHEAD OF COLD FRONT. ALL UPDATES GONE.
&&

.PREV DISCUSSION...
ISSUED 220 PM CDT FRI AUG 26 2005

SHORT TERM...TONIGHT THROUGH SUNDAY
FORECAST FOR THE NEXT 24-36 HOURS RATHER COMPLICATED...AS SEVERAL
SYSTEMS EXPECTED TO PROPAGATE ACROSS THE AREA. LARGE COMPLEX OF
STORMS DEVELOPED IN KANSAS AND NEBRASKA THIS MORNING AS A FAIRLY
POTENT UPPER TROUGH MOVED DOWN OFF THE ROCKIES AND INTO THE PLAINS.
SYSTEM SENT OFF SEVERAL WAVES WHICH SHOWED UP VERY WELL ON SURFACE
ANALYSES...SATELLITE DATA AND RADAR. THIS HAS LARGELY BEEN THE FOCUS
OF RE-DEVELOPMENT THIS AFTERNOON OF PULSE-TYPE STORMS OVER MISSOURI
AND NORTHERN ARKANSAS.

CURRENTLY...COLD FRONT INDICATED FROM WESTERN IOWA...EXTENDING INTO
EASTERN KANSAS AND NORTHERN OKLAHOMA. THIS FRONT WILL CONTINUE
MOVING TOWARD THE FORECAST AREA TONIGHT. SHOWERS AND THUNDERSTORMS
WILL BECOME MORE ORGANIZED AND WIDESPREAD IN NATURE MOST LIKELY
BETWEEN THE 00Z AND 03Z TIME FRAME AS THE BOUNDARY ENTERS SOUTHERN
MISSOURI AND INTERACTS WITH THE UPPER LEVEL TROUGH.

WITH CAPE VALUES GREATER THAN 3000 J/KG...AND PRECIPITABLE WATER
VALUES NEARLY TWO INCHES...SOME STORMS COULD BECOME STRONG TO
SEVERE. DURING THE REMAINDER OF THE AFTERNOON...THE STORMS WILL BE
PULSE-TYPE AND MORE ISOLATED. BY TONIGHT...FOCUS WILL SHIFT MORE
TOWARD NORTHERN ARKANSAS...AS THE BOUNDARY APPROACHES AND CONVECTION
INTENSIFIES. SEVERE RISK WILL BE IN AREAS NORTH OF A LINE FROM
CLARKSVILLE...TO SEARCY. ANY STORMS TONIGHT...HOWEVER...WILL BE
CAPABLE OF PRODUCING HEAVY RAIN...GIVEN THE PW VALUES AND VERY SLOW
STORM MOTION VECTOR /4 KTS PER 12Z SOUNDING/.

FRONT EXPECTED TO MOVE INTO NORTHERN ARKANSAS AFTER MIDNIGHT...WITH
THE SYSTEM SLOWING DOWN. TEMPERATURE FORECAST ON SATURDAY IS AT BEST
A LOW TO MEDIUM CONFIDENCE ONE. FRONTAL POSITION WILL MAKE ALL THE
DIFFERENCE IN THE WORLD...WITH COOLER TEMPERATURES NORTH OF THE
BOUNDARY...AND SIGNIFICANTLY WARMER READINGS SOUTH OF THE BOUNDARY.
AS FAR AS OUR FORECAST...HAVE TRENDED TEMPERATURES WHERE FRONT WILL
REACH THE CENTRAL PORTION OF THE FORECAST AREA BY MID TO LATE
MORNING...ALLOWING FOR COOLER TEMPERATURES IN NORTHERN AND CENTRAL
ARKANSAS AND THE HOTTEST READINGS IN THE SOUTH. THIS IS CLOSER TO
THE NAM SOLUTION...WHICH HAS ACTUALLY PERFORMED FAIRLY WELL WITH
THESE SYSTEMS OVER THE PAST FEW DAYS AND HAS BEEN THE MOST
CONSISTENT WITH THIS SCENARIO.

AFTER EVALUATING THE LATEST DATA...LOOKS AS IF HEAT INDEX VALUES
WILL BE VERY MARGINAL ON SATURDAY FOR A HEAT ADVISORY...AND THIS
WOULD BE OVER ABOUT THE SOUTHEASTERN THIRD OF THE AREA. WILL AT THIS
TIME LET THE CURRENT ADVISORY EXPIRE...AND WILL NOT RE-ISSUE FOR
SATURDAY. HOWEVER...IF THE FRONT SLOWS DOWN...TEMPERATURES WILL BE
SEVERAL DEGREES WARMER THAN EXPECTED...AND AN ADVISORY WOULD NEED TO
BE CONSIDERED.

BY SATURDAY EVENING...FRONT WILL MOVE THROUGH SOUTHERN ARKANSAS AND
INTO LOUISIANA...WITH WEAK HIGH PRESSURE MOVING IN BEHIND THE
SYSTEM.

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY
KEPT THE EXTENDED PERIODS DRY...AS THE FRONT PUSHES SOUTH OF THE
AREA...AND SUBSIDENCE TAKES OVER ON THE WESTERN SIDE OF A
LANDFALLING HURRICANE KATRINA. TEMPERATURES WILL BE MUCH CLOSER TO
NORMAL AS COMPARED TO THE LAST FEW WEEKS...DUE LARGELY TO SURFACE
FLOW OUT OF THE NORTH AND NORTHEAST.

&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

22

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT FRI AUG 26 2005

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-271000-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
500 AM CDT FRI AUG 26 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

A HEAT ADVISORY IS IN EFFECT TODAY FOR AREAS SOUTH OF A LINE FROM
CLARKSVILLE TO GREENBRIER TO NEWPORT. THIS INCLUDES THE LITTLE ROCK
METRO AREA. HOT TEMPERATURES...COMBINED WITH HIGH HUMIDITY...WILL
BRING OPPRESSIVE CONDITIONS THIS AFTERNOON.

A COLD FRONT WILL MOVE SOUTH THROUGH MISSOURI THIS AFTERNOON AND
EVENING...AND INTERACT WITH THE HOT TEMPERATURES ACROSS THE STATE.
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN NORTH ARKANSAS
TONIGHT. THIS INCLUDES AREAS NORTH OF A CLARKSVILLE TO CLINTON TO
BATESVILLE LINE. THE MAIN CONCERN WITH THESE STORMS IS STRONG AND
DAMAGING WINDS. HEAVY RAINFALL IS ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE COLD FRONT WILL CONTINUE MOVING THROUGH THE STATE SATURDAY...
WITH THE POSSIBILITY OF STRONG THUNDERSTORMS CONTINUING INTO
SATURDAY AFTERNOON.

COOLER AND DRIER AIR WILL MOVE INTO THE STATE EARLY NEXT WEEK...WITH
DRY WEATHER IN THE FORECAST MONDAY THROUGH THURSDAY.

.SPOTTER ACTIVATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT...MAINLY IN THE NORTH.

&&

FOR THE LATEST GRAPHICAL AND TEXT FORECASTS AND OUTLOOKS...PLEASE
VISIT OUR WEB SITE AT WWW.SRH.WEATHER.GOV/LZK

58

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
555 PM CDT FRI AUG 26 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     TSTM WND DMG     10 NNE MARSHALL         36.04N 92.57W
08/26/2005                   SEARCY             AR   LAW ENFORCEMENT

            BARN ROOF BLOWN OFF IN SOUTH MAUMEE

&&

51

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
846 PM CDT FRI AUG 26 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     TSTM WND DMG     VIDETTE                 36.43N 92.12W
08/26/2005                   FULTON             AR   TRAINED SPOTTER

            TREES AND POWER LINES DOWN IN THE VIDETTE AREA.

&&

22

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
944 PM CDT FRI AUG 26 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     TSTM WND DMG     GAMALIEL                36.45N 92.23W
08/26/2005                   BAXTER             AR   BROADCAST MEDIA

            TREE FELL AND DAMAGED A CAR. ANOTHER TREE FELL ON STATE
            HIGHWAY 101.

&&

22